/Engine/Source/Runtime/Experimental/Chaos/Public/GeometryCollection/Facades/CollectionTransformSelectionFacade.h
Get bones exactly at a target level. A target level of -1 will return all bones.
[TArray](API\Runtime\Core\Containers\TArray)< int32 > GetBonesExactlyAtLevel ( const int32 TargetLevel, bool bOnlyClusteredOrRigid ) const